The slope of the tangent to the curve y = ln, | vedclass

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Question

$y = \ell n(\cos x)$

$\quad \frac{d y}{d x}=\frac{1}{\cos x} 	imes(-\sin x)$

$\quad=-	an x$

at $\quad x=\frac{3 \pi}{4}$

$\quad\left(\fr

Vedclass · Accepted Answer

$1$

Vedclass · Answer

$y = \ell n(\cos x)$

$\quad \frac{d y}{d x}=\frac{1}{\cos x} 	imes(-\sin x)$

$\quad=-	an x$

at $\quad x=\frac{3 \pi}{4}$

$\quad\left(\frac{d y}{d x}ight)_{x=3 \pi / 4}=-	an 3 \pi / 4=1$

The slope of the tangent to the curve $y = ln\, (cos\,x)$ a $x = \frac{3\pi}{4}$ is

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